I am just like this. I was diagnosed with bipolar but it was then taken off my record as my pdoc never saw me manic. I also go through these mood swings. I do not get euphoric moods like mania. They just seem like a normal good mood. The holidays make my moods even more unpredictable. I think it is from stress and grief from losing my mother. You sound responsible and an active participant in your treatment which is commendable.

Keep up the good work!